From mboxrd@z Thu Jan 1 00:00:00 1970 From: Luca Boccassi Subject: Re: [PATCH v5 2/4] build: use dependency() instead of find_library() Date: Tue, 22 Jan 2019 14:09:41 +0000 Message-ID: <1548166181.8759.21.camel@debian.org> References: <20190103175725.5836-1-bluca@debian.org> <20190122131054.25196-1-bluca@debian.org> <20190122131054.25196-2-bluca@debian.org> <20190122134653.GB29548@bricha3-MOBL.ger.corp.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Cc: dev@dpdk.org To: Bruce Richardson Return-path: Received: from mail-wr1-f66.google.com (mail-wr1-f66.google.com [209.85.221.66]) by dpdk.org (Postfix) with ESMTP id 0BE72A3 for ; Tue, 22 Jan 2019 15:09:44 +0100 (CET) Received: by mail-wr1-f66.google.com with SMTP id z5so27452652wrt.11 for ; Tue, 22 Jan 2019 06:09:44 -0800 (PST) In-Reply-To: <20190122134653.GB29548@bricha3-MOBL.ger.corp.intel.com> List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" On Tue, 2019-01-22 at 13:46 +0000, Bruce Richardson wrote: > On Tue, Jan 22, 2019 at 01:10:52PM +0000, Luca Boccassi wrote: > > Whenever possible (if the library ships a pkg-config file) use > > meson's > > dependency() function to look for it, as it will automatically add > > it > > to the Requires.private list if needed, to allow for static builds > > to > > succeed for reverse dependencies of DPDK. Otherwise the recursive > > dependencies are not parsed, and users doing static builds have to > > resolve them manually by themselves. > > When using this API avoid additional checks that are superfluous > > and > > take extra time, and avoid adding the linker flag manually which > > causes > > it to be duplicated. > >=20 > > Signed-off-by: Luca Boccassi > > --- > > v2: split libbsd change in a separate commit, remove CC to stable > > =C2=A0=C2=A0=C2=A0=C2=A0as a meson bump will be required > > v4: update comment in drivers/meson.build to clarify role of > > =C2=A0=C2=A0=C2=A0=C2=A0pkgconfig_extra_libs > > v5: remove -lz from drivers/compress/zlib >=20 > How is this removal possible? Does drivers/compress/zlib no longer > depend > on libz, or is there a dependency added somewhere else in this patch > that > I'm missing? Similar question with the -lcrypto removal? >=20 > /Bruce Note that the removal is from the pkgconfig_extra_libs list - same for lcrypto. They use dependency() already, and the dep is added to the ext_deps, so the dependency comes in that way (and the right flags are picked via pkg-config). --=20 Kind regards, Luca Boccassi